scrnunit.h File Reference

<mi32/scrnunit.h> Definitions for SCREENUNIT constants and functions More...

#include <mi32/stddefns.h>

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Enumerations
enum	SCREENUNIT {   SCREENUNIT_Inches = 0, SCREENUNIT_Millimeters = 1, SCREENUNIT_mm = SCREENUNIT_Millimeters, SCREENUNIT_Points = 2,   SCREENUNIT_Pixels = 3, SCREENUNIT_1OverInches = 4, SCREENUNIT_MetersAtCurrentScale = 5, SCREENUNIT_Arbitrary = 6,   SCREENUNIT_Object = 7, SCREENUNIT_COUNT = 8 }
Functions
double	ConvertScreenUnits (double val, int iunit, int ounit, double MapScale=1.0)
double	ConvertScreenUnits (double val, double mmPerPixel, double MapScale, int iunit, int ounit)
double	GetScreenPixelSizeMM ()
double	MwinGetPixelSizeMM (void *hdc)

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Detailed Description

<mi32/scrnunit.h> Definitions for SCREENUNIT constants and functions

Definition in file scrnunit.h.

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Enumeration Type Documentation

enum SCREENUNIT

Screen unit enumeration values. These values are stored in files and thus must not change. Enumeration values: SCREENUNIT_Inches  SCREENUNIT_Millimeters  SCREENUNIT_mm  SCREENUNIT_Points  SCREENUNIT_Pixels  SCREENUNIT_1OverInches  SCREENUNIT_MetersAtCurrentScale  SCREENUNIT_Arbitrary  SCREENUNIT_Object  SCREENUNIT_COUNT  Definition at line 60 of file scrnunit.h.

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Function Documentation

double ConvertScreenUnits (  double  val, int  iunit, int  ounit, double  MapScale = 1.0 )

Convert SCREENUNIT value using pixel size determined from screen. Returns: Converted value Parameters: val  Input value iunit  Input units (SCREENUNIT_...) ounit  Output units (SCREENUNIT_...) MapScale  Map scale

double ConvertScreenUnits (  double  val, double  mmPerPixel, double  MapScale, int  iunit, int  ounit )

Convert SCREENUNIT value using given "pixel size". Returns: Converted value Parameters: val  Input value mmPerPixel  Millimeters per pixel MapScale  Map scale iunit  Input units (SCREENUNIT_...) ounit  Output units (SCREENUNIT_...)

double GetScreenPixelSizeMM (   )

Get screen pixel size in millimeters.

double MwinGetPixelSizeMM (  void *  hdc  )

Get screen pixel size in millimeters using device context (WIN32_NATIVE only). Parameters: hdc  Windows device context, 0 for default

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